Stem-winding and stem-setting watch.



PORTER.

Patented Feb. 25, 1913.

lllllll llll STEM' WINDING AND STEM SETTING WATCH.

APPLICATION FILED NOV. 7 1911.

COLUMBIA PLANOGRAPH CO.,\VASHINGTDN, D c.

. for winding.

UNITED STATES PATENT OFFICE.

WILSON E. PORTER, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE NEW HAVEN CLOCK 00., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

STEM-WINDING AND STEM-SETTING WATCH.

Specification of Letters Patent.

Application filed November 7, 1911.

Patented Feb. 25,1913.

Serial No. 658,930.

To all whom it may concern:

Be it known that I, VILSOX E. PORTER, a citizen of the United States, residing at New Haven. in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Steminding and Stem-Setting \Vatches; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1 a view in front elevation of a stem-winding and stem-setting watch constructed in accordance with my invention. Fig. 2 a view of the watch with the dial and dialplate removed, showing the windingwheel and dial-wheel in elevation, and the pendant in. longitudinal section, wit-h the stem pushed inward into its normal position Fig. 3 a corresponding view with the parts adjusted for setting by the pulling out of the stem. Fig. 4 a broken view in vertical section on the line (47) of Fig. 2. Fig. 5 a detached perspective view of the yoke. Fig. 6 a detached sectional view of the shouldered stud.

Heretofore the cheaper grades of stemwinding and stem-setting watches have been set by pushing in the stem, which is objectionable on account of the danger to which such watches are constantly exposed of having the hands shifted in position by the accidental pushing in of the stem by pres sure upon the crown of the watch when in the wearers pocket as he bends forward, or by the pressure of the swivel of the chain upon the crown, or in some other accidental way. These objections have been avoided in high grade stem-winding and stem-setting watches by constructing them to set by pulling out the stem, but that principle of operation has heretofore been too expensive for application to stem-winding and stem-setting watches of the cheaper class.

My present invent-ion aims to confer upon the cheaper grades of stem-winding and stem-setting watches the advantages proceeding from pulling out the stem to set.

With these ends in view, my invention consists in a stem-winding and stem-setting watch having certain details of construction and combinations of parts as will be hereinafter described and pointed out in the claims.

In carrying out my invention, I employ a yoke 2 swiveling upon a shouldered stud having a large bearing-head 3, shoulder at and a rivet 5, which latter is headed down upon the inner face of the front movementplate 6, upon the outer face of which the said yoke is located. The said yoke 2 swivels or rocks upon the shoulder 4: which also forms a bearing for the winding-and-setting wheel 7 which bears directly upon the outer face of the said front movement-plate 6 and meshes into the winding-and-setting pinion 8 which is located in a plane at a right angle to the plane of the watch and rests upon a bridge 9 interposed between the said front movement-plate 6 and the rear movement-plate 10, the said pinion 8 being permanently secured to the bridge 9 with freedom to revolve, by its hub 11 which passes downward through the bridge and is headed over upon a washer 12 bearing against the inner face thereof. The said yoke 2 carries at its lower end an intermediate winding-and-setting wheel 13 constantly in mesh with the wheel '7 aforesaid, and interposed between the r ain windingwheel 1a of the watch and the dial-wheel 15 thereof, the said wheel 13 being normally held in engagement with the main winding-wheel 1e bv a plate spring 16 secured to the outer face of the front movement-plate 6 and engaging with an arm 1G offsetting from the right hand edge of the yoke 2.

At its upper end the yoke formed with an outwardly extending operatingarm 1? turned inward at its outer end through a clearance-notch 18 in the plate 6 into position to engage directly with the beveled or rounded upper face of an operating-cone 19 mounted near the inner end of a longitudinally movable and rotatable winding-andsetting stem 20 having its inner end squared and passed through a squared opening in the pinion 8, whereby the stem is free to be moved longitudinally with respect to the pinion which. however, remains coupled therewith for rotation thereby. The said stem passes outward through a hollow pendant 21 secured at its inner end to the casering 22 and provided at its outer end with a head 23 carrying a how 2 The stem 20 is furnished at its projecting outer end with a crown 25 of ordinary construction. Within the pendant 21, I locate a spring 26 encircling the outer end of the stem and interposed between the closer outer end of the pendant and a collar 27 on the stem, this spring exerting a constant efiort to push the stem inward and maintain it in its winding position. The spring 26 therefore supplements the action of the spring 16 already mentioned. When the crown is seized by the finger and the stem 20 pulled outward against the tension of the springs 16 and 26, the rounded upper surface of the operatingcone 19 carried by the stem 20, engages with the inner edge of the arm 17 of the yoke 2 which is thus rocked from left to right on the shoulder 4:, whereby. the intermediate winding-and-setting wheel 13 is demeshed from the main winding-wheel 14 and swung from right to left into engagement with the dial-wheel 15, whereby the watch is adjusted for setting and maintained in this adjustment as long as the outward draft is maintained upon the stem. However, as soon as the out ward pull of the fingers upon the stem is removed, the springs 16 and 26 automatically operate to restore the stem to its normal or inward position, whereby the yoke is allowed to swing from left to right, and thus demesh the wheel 13 from the dial-wheel 15, and remesh it with the main windingwheel 14.

It will thus be seen that by extremely simple means and without the addition of supplemental wheels or levers, I provide for setting the watch by the pulling out of the stem rather than on pushing in the stem, whereby the watch is made more reliable as a time-piece since the accidental shifting of the hands is avoided for it is not conceivable that in any use of the watch, the stem may be accidentally pulled outward. By 10- eating the yoke upon the outer face of the front movement-plate and forming it with an outwardly extending operating-arm turned inward at its outer end for engagement directly with the stem, I secure a great economy of space and avoid the duplication of parts and wheels which would otherwise be necessary.

winding-wheel with which the said winding- 7 and-setting wheel carried by the yoke is normally engaged, a dial-wheel with which the said wheel carried by the yoke is engaged when the yoke is swung by the pulling out of the said stem, and means for normally holding the yoke with its wheel meshed into the main winding-wheel.

2. In a stem-winding-and-stem-setting watch in which the setting of the watch is eifected by the pulling out of the winding stem, the combination with a longitudinally movable and rotatable stem, of anoperatingcone carried thereby, a yoke located upon the outside of the front movement-plate of the watch and provided with an outwardly extending arm turned inward at its outer end to engage directly with the upper face of the said cone, whereby the yoke is positively operated by the cone when the stem is pulled outward, an intermediate winding and-setting wheel mounted upon the yoke, a winding-wheel and a dial-wheel, and a spring co-acting with the yoke for normally maintaining the engagement of the wheel carried by it with the main winding wheel of the watch. 7

3. In a stem-winding-and-stem settingwatch in which the stem is pulled out for setting, the combination with a longitudinally movable and rotatable stem, of a winding-and-sett-ing pinion through which the stem passes and which is revolved by it, a

winding-and-setting wheel constantly meshing with the said winding-and-setting pinion, a yoke located upon the outer face of the front movement-plate of the watch and formed with an outwardly extending arm co-acting directly with the said stem for positively swinging the yoke when the stem is pulled outward, a shoulderedstud upon which the yoke swivels and upon which the said winding-and-setting wheel turns, an intermediate winding-and-setting wheel meshing into the said winding-and-setting wheel and mounted upon the yoke at the lower end thereof, a main winding-wheel, a dial wheel, and a spring normally maintaining the intermediate winding-and-setting wheel in mesh with the main winding wheel, whereby the stem must be pulled outward preparatory to swinging the yoke to engage the intermediate winding-and-setting wheel with the dial wheel for setting the watch.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

IVILSON E. PORTER. Witnesses:

GEORGE D. SEYMoUR, CLARA L. WEED.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

